“How cold is cold enough? Smart-Gauge knows by conducting an instant performance test on the A/C system. Works on all vehicles and designed specially for vehicles with variable displacement compressors where manifold gauges could misdiagnose refrigerant charge levels. Powered by a standard 9V battery (included).

Product Features

  • Micro-processor instantly determines A/C system performance
  • Suspends from hood latch or attaches to your manifold gauge set
  • Reads in (°F/°C)
  • Diagnostic Flowchart and Tech-Tip guide included
  • Compares vent temp to ambient air temp to determine system performance

Click Here For More Information